IS THERE ANY SIDE EFFECTS TO CANDATE OR ACIDOPHILUS/BIFIDUS DOUBLE STRENGTH CAPSELS??

Hello,
Sorry to be a pain here but I am so scared about putting things in my body. We picked up some grapefruit seed extract to rinse my mouth out and to drink for my intestines, but then they also gave me Candate and acidophilus/bifidus pills to take and I'm scared about getting even sicker than I already am. Any one have any adverse side effects to using these? If so can you please share?
Thank you so much. :)